Home / 126,398,472.12-189,431,238.10-53,525,081.52

Finding the Fourth Proportional to 126,398,472.12, 189,431,238.10 and 53,525,081.52

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Solution

The fourth proportional to 126,398,472.12, 189,431,238.10 and 53,525,081.52 is: 80,217,128.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,398,472.12 : 189,431,238.10 = 53,525,081.52 : x
  2. Step 2: Convert to fraction form
    126,398,472.12/189,431,238.10 = 53,525,081.52/x
  3. Step 3: Cross multiply
    126,398,472.12x = 189,431,238.10 × 53,525,081.52
  4. Step 4: Simplify right side
    126,398,472.12x = 10,139,322,461,737,030
  5. Step 5: Solve for x
    x = 10,139,322,461,737,030/126,398,472.12
  6. Step 6: Final answer
    x = 80,217,128.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.